CATERPILLAR 120M2 MOTOR GRADERS

Technical Description

The Caterpillar 120M2 Motor Grader is a high-performance machine engineered for precision grading and earthmoving tasks. It features a Cat C7.1 ACERT™ diesel engine with a displacement of 427.8 cu in, producing 145 hp at 2,100 rpm and delivering 692.6 lb-ft of torque. The engine meets U.S. EPA Tier 4 Interim and EU Stage IIIB emission standards, ensuring environmental compliance and reliable operation. The 120M2 is equipped with an 8-speed forward and 6-speed reverse direct drive powershift transmission, enabling efficient control and smooth shifting. Its robust hydraulic system includes a variable piston pump with a flow rate of 55.7 gpm and a relief valve pressure of 3,500 psi, supporting demanding grading operations. The grader’s 12 ft moldboard offers a maximum depth of cut of 28.4 in, with a blade tip angle of 40° forward and 5° backward, and a 360° rotating circle for versatile maneuverability. The machine has a standard operating weight of 39,892 lbs and a maximum operating weight of 48,987 lbs, with a top forward speed of 28.4 mph and a top reverse speed of 22.5 mph. The 120M2’s dimensions include an overall length of 29 ft, a height to the top of the Isomount cab of 10.9 ft, and a width over tires of 8.3 ft. The front axle provides 1.9 ft of ground clearance, 18° wheel lean, and 32° total oscillation, enhancing stability and traction. Fluid capacities include 99.9 gal of fuel, 17 gal of hydraulic fluid, and 13 gal of cooling system fluid, ensuring extended operation between refills.